Hertel 02387322 Screw Machine Drill Bit Size 39 Hss Tin

Product Description

The HERTEL 02387322 is a screw machine length drill bit designed for high-throughput drilling in metal, wood, and composite materials. Built from high-speed steel with a titanium nitride (TiN) coating, it delivers extended tool life and reduced friction in repetitive drilling operations. The bit features a 135-degree split point that self-centers on contact, reducing the need for a center punch and minimizing walking on hard or smooth surfaces. At 1-13/16 inches overall length, the shorter screw machine profile provides added rigidity compared to jobber-length bits, making it well suited for CNC machining centers, drill presses, and production line applications.

This bit is used in light manufacturing, metalworking shops, and production drilling setups where tight tolerances and consistent hole quality matter. The Size 39 wire gauge designation corresponds to 0.0995 inch diameter, placing it in the small-bore category. It is commonly used for tapping preparation, pilot holes, and close-tolerance work in ferrous and non-ferrous metals. A licensed machinist or tool-and-die professional would typically deploy this bit in a collet-style or standard drill chuck on a stationary or CNC machine tool.

Key Features

• TiN coating reduces friction and increases surface hardness for longer tool life in repetitive drilling
• 135-degree split point self-centers on contact, reducing setup time and drill walking
• Screw machine length body adds rigidity over jobber-length bits, improving accuracy in tight setups
• Web-thinned parallel web reduces cutting force and heat buildup at the tip
• Right-hand spiral flute efficiently clears chips from the cutting zone
• Straight-cylindrical shank fits standard drill chucks and collet holders without modification

Compatibility

Designed as an OEM-style replacement or standard production drill bit for use in any drill chuck or collet system accepting a 0.0995 inch straight-cylindrical shank.

Installation Notes

This bit is installed and serviced by machinists, toolroom technicians, or trained production operators. Secure the shank firmly in the chuck or collet to the manufacturer-specified clamping depth before operation. Ensure the spindle is fully stopped and the machine is powered down before changing bits. Do not exceed the recommended feed rate or spindle speed for the workpiece material, as overfeeding a small-diameter bit can cause breakage.